Global Scope

The outermost scope, whose declarations may be available across a script or module.

What is Global Scope in JavaScript?

Global Scope — The outermost scope, whose declarations may be available across a script or module.

const taxRate = 0.08;

function addTax(price) {
    const tax = price * taxRate;
    return price + tax;
}

Level: Apprentice · More JavaScript terms at this level

Updated September 27, 2026